Expanding support for params in delegates, params tuple support

IDEHelper/Tests/src/Params.bf

@@ -0,0 +1,29 @@
+using System;
+
+namespace Tests;
+
+class Params
+{
+	class ClassA<T> where T : Tuple
+	{
+		public static int Test(delegate int(char8 a, params T) dlg, params T par)
+		{
+			return dlg('A', params par);
+		}
+	}
+
+	class ClassB : ClassA<(int a, float b)>
+	{
+
+	}
+
+	[Test]
+	public static void TestBasics()
+	{
+		int val = ClassB.Test(scope (a, __a, b) =>
+			{
+				return (.)a + (.)__a + (.)b;
+			}, 10, 2.3f);
+		Test.Assert(val == 65+10+2);
+	}
+}